165results about How to "Reduce cooling power" patented technology

The present invention relates to an air-conditioning system, in particular an air-conditioning system for the air-conditioning of a passenger cabin of an airplane, having at least one heat exchanger arranged in a stagnation air passage for the cooling of compressed air and having at least one first shaft device and one second shaft device, with the heat exchanger including at least one first heat exchanger unit and one second heat exchanger unit separate from it on the compressed air side, which are arranged in the common stagnation air passage and of which a respective one is in communication on the compressed air side with a respective one of the shaft devices, with the shaft devices having compressors which are in respective communication on the outlet side with the inlet of the heat exchanger units on the compressed air side. The compressors are acted on by stagnation air or environmental air on the inlet side and are driven by means of one or more motors. The invention further relates to a method for the preparation of air for the air-conditioning of a space.

The invention discloses a power battery thermal management method and system applied to a charging process or discharging process of a battery pack. The method comprises the following steps: in the discharging process of the battery pack, detecting the current temperature of each single battery in the battery pack in real time, and calculating the current temperature rise rate of each single battery in real time; if the highest current temperature of each single battery exceeds a first preset temperature threshold value and the highest current temperature rise rate of each single battery exceeds a preset temperature rise threshold value, entering a radiation mode and starting radiation; in the radiation mode, if the highest current temperature of each single battery is lower than a second preset temperature threshold value, stopping radiation; if the highest current temperature of each single battery is higher than a third temperature threshold value, restarting radiation. According to the method and the system, a radiation module can also be controlled to be started or stopped to keep the battery pack within a relatively stable temperature range according to the temperature rise rate of each single battery in a discharging mode of the battery pack, so that the safety of the battery pack is improved.

The invention provides a small air conditioner which is provided with a cold air outlet positioned above a small space, such as a cooking utensil, a range hood, a kitchen or a washroom, an elevator room and a space in the front end of a header board, and uses an air conditioning system or a semiconductor refrigerating sheet to play a role in cooling human body. The air conditioner is characterized in that: an air conditioner compressor is positioned below the cooking utensil or above the range hood; the air inlet of an air conditioner evaporator is positioned above a cooking utensil panel or the range hood, while the cooling air hole is positioned on a front panel of the cooking utensil or the range hood; and cold air produced by the evaporator is discharged outside from the air outlet to cool the human body cooking in front of the cooking utensil or the range hood, so the severe high temperature environment in front of the cooking utensil in summer is improved in a large scale. The invention has the advantages that: an independent small air conditioning system or a semiconductor refrigerating device is used for partially cooling the environment around the human body within a small range; and the air conditioner has greatly lowered refrigerating power, a greatly lowered ambient temperature, comfort and health, and energy conservation and environment friendliness in comparison to the traditional widely used air conditioning device which performs full cooling in an entire space range.

The invention discloses an active and passive compound control system for a hybrid power hydraulic excavator. According to the active and passive compound control system for the hybrid power hydraulic excavator, a control circuit comprises a hydraulic pump A, a hydraulic pump B, a hydraulic pump C, a movable arm cylinder control valve bank, a bucket rod cylinder control valve bank, a bucket control valve, a rotation control valve, a rotating motor control valve bank, a two-position and two-way valve I, a two-position and two-way valve II, a two-position and two-way valve III, a two-position and two-way valve IV, a two-position and two-way valve V, a two-position and two-way valve VI, a two-position and two-way valve VII, a two-position and three-way valve I, a two-position and three-way valve II, an energy accumulator I and an energy accumulator II, an open type control circuit is adopted to serve as the control circuit, the two cavities of a hydraulic cylinder are each controlled through a power source, and the pressure and the flow of each cavity are regulated independently. The active and passive compound control system for the hybrid power hydraulic excavator has the multiple technical advantages that the energy efficiency is high, the degree of integration is high, power consumption is low, power supply redundancy is avoided, a pilot oil source is not needed, the noise is low, and kinetic energy recovery and potential energy recovery are integrated.

The invention provides a water triple-point automatic freezing and storage device, which comprises a refrigeration constant temperature tank and a compressor refrigeration machine unit, wherein liquid media is contained in the refrigeration constant temperature tank, the refrigeration constant-temperature tank comprises a mixing region and a work region, the compressor refrigeration machine unit refrigerates the liquid media, and a water triple-point bottle is arranged in the work region of the refrigeration constant-temperature tank. The invention also provides a water triple-point automatic freezing and storage method. The method and the device provided by the invention realize the complete automatic freezing and storage of the water triple-point bottle. The defects that during the conventional manual freezing, the bottle can be easily damaged, and labor and time are wasted are overcome. The work efficiency is greatly improved. A compressor refrigeration technology is adopted, and the slow temperature reduction freezing is realized, so the ice lattice distribution in the triple-point bottle is uniform, supercooling is avoided, and use is realized after the freezing. Instant use after the freezing can be realized, and time and labor are saved.

The invention relates to a dehumidifier comprises a dehumidifying wheel. An absorbent is arranged on the dehumidifying wheel; the dehumidifying wheel is divided into a dehumidifying area and a regeneration area; the dehumidifying wheel is connected with a driving device driving the same to rotate; one side of the dehumidifying area is provided with a fresh air duct; one side of the regeneration area is provided with a regenerating air duct; the dehumidifier further comprises at least two heat pumps; each heat pump is formed by a steamer, a compressor, a condenser and an expansion valve altogether forming a refrigerating circulating system; condensers of a plurality of heat pumps are arranged on a regeneration air inlet of the regeneration area; and the condensers of the plurality of heat pumps are orderly arranged front and back in the regeneration air duct. The numbers of heat pumps can be determined as needed; one or a plurality of heat pumps of the dehumidifier can be opened or closed as needed, so the dehumidifier can meet needs of various conditions; and flexible use can be achieved.

The invention discloses a manufacturing method of piezoelectric crystals. The manufacturing method includes that a kyropoulos method is used to grow piezoelectric crystals, and crystal bars of 2-6 inches and in any axial direction can be taken out from crystal ingots; the kyropoulos method includes that when the crystal growing process enters an equal diameter stage, a mode of stopping upward lifting or slight lifting is adopted to enable crystals to grow naturally, lifting speed is smaller than 0.1mm/h, the crystals do not rotate, and the top end of each crystal is not higher than an opening of a crucible during crystal growing. The crystal bars of 2-6 inches and in any axial direction can be taken out of the crystal ingots to meet requirements on various crystal axial directions during designing of a surface acoustic wave (SAW) filter, and especially the problem that some conventional Czochralski methods (CZ) cannot grow crystals in axial directions is solved.

A gas turbine has a compressor providing compressed air, a combustion chamber provided with a burner, and an expansion turbine, wherein a bypass flow channel is also provided designed to supply compressed air past the burner and to supply a hot gas flow generated in the combustion chamber during operation of the gas turbine. The opening cross section of the bypass flow channel can be adjusted, and an adjustment unit is designed to adjust the opening cross section of the bypass flow channel such that the modification speed of the opening cross section is selected such that the relative combustion chamber pressure drop or a material temperature of the combustion chamber is substantially constant, in particular that the relative combustion chamber pressure drop or the material temperature of the combustion chamber does not vary by more than 10%.

The invention discloses a hydraulic cylinder loading detecting device which comprises a first oil pump, a second oil pump, a pressurizing cylinder, a reversing valve, a first connector used for being connected with a first hydraulic cylinder and a second connector used for being connected with a second hydraulic cylinder. A first cavity of the pressurizing cylinder is connected with the first oil pump which provides oil for the pressurizing cylinder through the reversing valve and is connected with the second connector which provides oil for the pressurizing cylinder at the same time. A second cavity of the pressurizing cylinder is connected with the first connector and is used for providing oil for the first connector. The second connector is connected with the second oil pump which provides oil for the second connector. The pressurizing cylinder can output driving pressure oil with pressure higher than oil source pressure, the problem that an oil source is at a high-pressure working state can be avoided, and oil source service life is prolonged. In addition, energy recycling and reusing can be achieved, system installing power is lowered, system heating is low, and cooling power can be saved.

The invention provides a linear-motor-driven conveying system, in particular stretching system. The improved linear-motor-operated conveying system is distinguished, inter alia, by the following features: the conveyed web (F) can be fixed to the nipper part (6), as a result of which a conveyed web plane (FE) is defined, said film plane (FE) being arranged at a height (H) with respect to the motor working side (MA) of the single linear motor drive or of the more powerful linear motor drive in the case of two linear motor drives, and said height (H) being less than or equal to the length (L) of the secondary parts (503) on the conveying parts (7); the conveying system comprises either a) only one linear motor drive provided beneath the conveying part (7), or b) only one linear motor drive provided above the conveying part (7), or c) one linear motor drive arranged beneath and one arranged above the conveying part (7), the upper linear motor drive and/or the associated control system being configured in such a manner that the upper linear motor drive can only be operated with a maximum power of 75% in relation to the maximum power of the lower linear motor drive.

The invention discloses a charging generator. The charging generator comprises a front warehouse and a rear warehouse. The front chamber is used to install a device that requires IP protection in thecharging circuit of the charger. The rear chamber does not require an IP protection level and is used to install a device that does not require IP protection in the charging circuit of the charger. Inthis way, structural optimization of a plurality of devices involved in the charging circuit of the charger can be realized, thereby reducing the overall volume of the charger, thereby achieving thepurpose of reducing the overall weight of the charger. Specifically, a heat sink is installed on the partition plate between the front and rear chambers, and the mounting surface of the heat sink is placed in the front chamber, and the heat radiating fins of the heat sink are placed in the rear chamber, and install the fan and the air inlet and outlet in the back warehouse. In this way, efficientheat dissipation by the combination of the heat dissipating fins and the fan can greatly improve the heat dissipation efficiency and reduce the volume of the heat sink itself. In turn, the purpose ofreducing the overall volume of the charger is achieved, which is beneficial to the weight reduction of the train equipment and the reduction of the energy consumption of the train operation.

The invention relates to an engineering operation machine and belongs to the field of machines. The engineering operation machine comprises a hydraulic cooling system, a liquid-gas energy storage balance system, a hydraulic cylinder driving system and a working device driving system. The hydraulic cooling system comprises a hydraulic system, a cooler, a cooling control device, an oil tank and a heat recovery device. The heat recovery device comprises a heat exchanger, a working medium pump, a working medium filter, a working medium storage device, a condenser, a condenser control device, an electric generator, an expander, a heat recovery controller and an electricity storage device. The hydraulic system sucks hydraulic oil from the oil tank through an oil suction opening, the hydraulic oil enters the heat recovery device through an oil return opening after work is completed, the hydraulic oil subjected to heat exchange through the heat recovery device enters the cooler to be cooled, the hydraulic oil returns to the oil tank finally, and circulating is completed. According to the engineering operation machine, the potential energy of a working device can be recovered effectively, stored energy is released in the ascending process of the working device, and thus energy is saved. The cooling power of the cooling system can be reduced, and the non-load operation energy consumption of the cooling system is reduced when the system temperature is low.

A battery module or battery pack is provided having a serpentine counter flow cold plate with improved dissipation of heat from individual battery cells, wherein the cold plate provides a more uniform temperature gradient across the cold plate to more evenly transfer heat from the battery cells to liquid coolant circulating through the cold plate. The cold plate selectively omits turbulator material upstream of turbulators to control and govern the coolant fed into and through the turbulators to provide a more uniform temperature gradient across the cooling surfaces.

The invention relates to the field of chemical engineering and technology. Aiming at solving the problems of high energy consumption and low efficiency of an existing stripping technology of the two-dimension nano materials, the invention provides a method for efficient supergravity stripping of two-dimension nano materials. The method comprises the following steps: firstly, feeding a two-dimensional stratified material into dispersion liquid for fully wetting and uniformly mixing to obtain material dispersion liquid, and then inputting the material dispersion liquid to a circular storage tank; secondly, outputting the material dispersion liquid from an outlet in the lower end of the circular storage tank, enabling the material dispersion liquid to enter a central entrance of a secondary rotary flow reactor rotating at high speed through a pipeline; enabling feed liquid flowing out of the reactor outlet to enter an entrance of a shell and tube heat exchanger through the pipeline; and refluxing the feed liquid flowing out of the shell and tube heat exchanger into the circular storage tank, and cycling for multiple times according to the steps, thus obtaining a few-layer two-dimension nano material with less than 3 layers. The method disclosed by the invention can realize quick, efficient, low-cost, large-scale and high-quality production of various two-dimension layered nano materials.

A cooling assembly includes a device chamber, a cooling chamber separated from the device chamber, a heat exchanger, a device chamber fan arrangement and a control unit. The heat exchanger includes a first portion located in the device chamber and a second portion located in the cooling chamber for transferring heat from the device chamber to the cooling chamber. The device chamber fan arrangement is configured to generate a device chamber cooling medium flow including a first partial flow interacting with the first portion of the heat exchanger. The cooling assembly also includes a first throttle arrangement for regulating the first partial flow. The control unit is configured to reduce a cooling power of the heat exchanger as a response to predetermined operating conditions by decreasing the first partial flow with the first throttle arrangement.

A casting device includes a mold cavity configured to form a hollow space for a cast part, a casting chamber for a metal melt, a gating system, an annular duct for the metal melt, and at least two annular duct connections configured to connect the casting chamber to the annular duct. The annular duct is configured to be connectable with the mold cavity via the gating system.